The latest iteration is currently only available to members of the Preview for Developers program, and is still to reach the general public, despite the promise of a raft of improvements.

Microsoft India revealed on Twitter that Windows Phone 8.1 will be available to existing users with compatible smartphones in the first half of July. It has not yet been confirmed whether this time-frame relates to customers outside of India, but it is likely that other regions will see a similar release date.

Important changes that are set to be implemented with the upgrade include file downloads in Internet Explorer, a data sync with Windows 8.1 and a reading mode for websites.